[1]School of Geosciences and Info-Physics, Central South University, Changsha 410083, China;
[2]Hunan Key Laboratory of Nonferrous Resources and Geological Hazard Detection (Central South University), Changsha 410083, China;
[3]Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education (Central South University), Changsha 410083, China;